The cryptographic signature guarantees the file is safe to install and was not tampered
with in any way.

* Introducing App Insights. Find out how much time you spend in each app on your device, and take back control of your phone-life balance.
* Automatically scan new Wi-Fi networks to alert you faster to potential privacy threats.
* Charging screen supports live wallpaper backgrounds.
* Smarter notifications alerts you to features that you use more often.
* Virus definitions updates are now 90% smaller, reducing data consumption.